From owner-freebsd-smp Sun Mar 17 9:10:40 2002 Delivered-To: freebsd-smp@freebsd.org Received: from fledge.watson.org (fledge.watson.org [204.156.12.50]) by hub.freebsd.org (Postfix) with ESMTP id 6E9F737B426; Sun, 17 Mar 2002 09:10:36 -0800 (PST) Received: from fledge.watson.org (fledge.pr.watson.org [192.0.2.3]) by fledge.watson.org (8.11.6/8.11.6) with SMTP id g2HH8sk09362; Sun, 17 Mar 2002 12:08:54 -0500 (EST) (envelope-from robert@fledge.watson.org) Date: Sun, 17 Mar 2002 12:08:54 -0500 (EST) From: Robert Watson X-Sender: robert@fledge.watson.org To: Alfred Perlstein Cc: Munehiro Matsuda , tanimura@r.dl.itc.u-tokyo.ac.jp, phk@FreeBSD.ORG, hitmaster2k@yahoo.com, current@FreeBSD.ORG, smp@FreeBSD.ORG Subject: Re: -current lock warning... In-Reply-To: <20020317163953.GY4857@elvis.mu.org> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-freebsd-smp@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.org On Sun, 17 Mar 2002, Alfred Perlstein wrote: > * Munehiro Matsuda [020317 06:36] wrote: > > > > PS. I got another message that happend when I ^C'ed a buildworld earlier, > > with same kernel. May be it should go to Alfred Perlstein? > > > > lock order reversal > > 1st 0xc198eec0 pipe mutex @ ../../../kern/sys_pipe.c:779 > > 2nd 0xc0367fe0 Giant @ ../../../i386/i386/trap.c:716 > > I think there's a place where the pipe can fault on an address while > copying, I'll take a look at this. Are there any assertions that should be in place for copyin/copyout requring fault handling? It sounds like somewhere we need to assert that Giant is held... Robert N M Watson FreeBSD Core Team, TrustedBSD Project robert@fledge.watson.org NAI Labs, Safeport Network Services To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-smp" in the body of the message